Testing a file type...

[petermcleland]

Just testing:-





Just testing the differences between .jpg and .png...I can't see any visual difference but there is a very large file size difference...756 KB and 1.76 MB

[Airspeed]

Hi Peter,
IMHO, The top one is obviously better definition.
Which is which, type & size?

[DaveG]

Jpg is a lossy compression format, png isn't.
Every time you resave a jpg the quality will get slightly worse depending on the amount of compression.

[petermcleland]

Hi Peter,
IMHO, The top one is obviously better definition.
Which is which, type & size?

Mike the top is a ,jpg of file size 756 KB

The bottom one is from the original screenshot .png of file size 1.76 MB

The dimensions of both pics are 1024 pixels wide.

I can see no difference in the two pictures and would prefer my PrtScn key to take the screenshots as .jpg rather than .png saving about a MB on each. However, I can not find where I can make that choice in Windows 10

It just means that I have to do extra processing on each screenshot.

[petermcleland]

Jpg is a lossy compression format, png isn't.
Every time you resave a jpg the quality will get slightly worse depending on the amount of compression.

Dave,

I know that in converting the PNG to a JPG I lose the Transparency but I am unable to see that on my screen and I am saving at least 1 MB on each screenshot without me being able to detect any visual difference. I host all my own pictures on the Blue Host servers in Utah and rest assured the saving of one MB per picture does add down very quickly! And this is using the MINUMUM compression on the conversion. I am hoping to find a way to save the screenshot directly as a JPG and thus reduce the amount of work I need to do on it.

[DaveG]

There will be a slight reduction in quality, but unless the image is edited and resaved many times you probably won't notice.

No idea if Win10 can save screenshots in jpg. P3d can though.

[petermcleland]

There will be a slight reduction in quality, but unless the image is edited and resaved many times you probably won't notice.

No idea if Win10 can save screenshots in jpg. P3d can though.

OK, that would be where I've seen a reference to it...Can you refresh my memory on how to find it in P3D Dave?

[Dev One]

To me the top picture is darker in all shades of colour & there is a hint of less sharpness. Monitor is a Samsung SyncMaster S24B300 resolution 1920 x 1080 - using W8.1.
For my screenshots I use ALT+Printscreen & then save it using Paintshop Pro 7.
Quick experiment on my W10 laptop, I can screenshot & then save in Paint in .png;Jpeg;Bmp;Gif, but do not have the choice if compression that I can see at the moment.
Keith

[DaveG]

It'll be in the options settings somewhere Pete. I'm not at the PC at the moment but I can look it up later this evening.

[Effoh]

Peter,

If you use the snipping tool in Win10 it gives you the option to save as .jpg

https://support.microsoft.com/en-gb/ins ... screenshot

HTH